Cotchan



H. S. McCUTCHAN.

CARBURETER CONTROL.

APPLICATION. FILED MAY 6. I918.

1,342,966. v Patented June 8, 1920.

51 m we :01

. I/vans j flvg plccuhl ay,

qzzfm z /qw a All (Inc: at up UNITED STATES PATENT OFFICE.

HARVEY S. MQG'UTCHAN, 015 DETROIT, MICHIGAN, ASSIGNOR T0 KEROSENEBURNING CARBURETOR COMPANY, 01E DETROIT, MICHIGAN, A CORPORATION OFMICHIGAN.

CARBURETER CONTRQL.

Specification of Letters Patent.

Patented June 8, 1920.

Application filed May 6, 1918. Serial No. 232,696.

To all whom it may concern:

Be it known that I, HARVEY S. Mo- CUTCHAN, a citizen of the UnitedStates of America, residing at Detroit, in the county of Wayne and Stateof Michigan, have in vented certain new and useful Improvements inCarbureter Control, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to controlling means for a dual-fuel carburetorand to an arrangement thereof whereby a single operating member withineasy reach of the chaufieur selectively controls the fuel to be used orchanges from one fuel to the other, and at the same time regulates thesupply as needed.

The invention consists in the matters hereinafter set forth, and moreparticularly pointed out in the appended claims.

The drawing is a view in elevation of a device embodying the inventionmounted on a carbureter of the type described, parts being shown insection and broken away.

As herein indicated, a carburetor 1 having a valve 2 for one kind offuel and another valve 3 for a different kind, is pro vided with arocking lever 4 whereby either valve may be depressed by shifting of thelever from the position shown in the drawing in which the valves areindicated as closed. A needle valve 5, indicated in dotted lines, andnot per se a part of the invention, which may be moved to and from itsseat axially by any suitable transmis; sion of motion of an axiallyreciprocable stem 6, controls the fuel feed. As herein indicated,although not a part of this invention, a spring arm 7 is depressed bythe inward shifting of the stem 6 when the latter is turned, because ofthe latters screwthreaded engagement with a suitable fitting 8 that ispreferably split and has a take-up screw 9 to avoid lost motion.

A suitable bracket 10 which is herein shown as mounted on a dash or cowl11 and may of course be arranged to be placed on the steering post of anautomobile, affords support for a rod 12 which is rotatable andlongitudinally reciprocable therein when manipulated by a handle 13 orthe like. The lower end portion of the rod telescopes through a sleeve14, a pin-and-slot connection indicated at 15 preventing interrotationof the parts and permitting their longitudinal shifting. A universaljoint connection 17 couples the sleeve with a head 18 that isnon-rotatably secured to the stem 6 whereby the latter may be turned. Alink 19 connects the lever 4 with the rod 12, the upper end portion ofthe link being pivoted to a block 21 that is adjustably secured to therod 12 between suitable stop collars 22 and 23 whereby it may beaccurately adjusted as desired.

As a result of this construction a controlling mechanism is obtainedwhich, when shifted longitudinally, throws one or the other fuel valvesinto the feed chamber of the carbureter while the rotation of the handleby which the device is manipulated regulates the supply through theneedle valve.

As will be understood, member 4 constitutes an element shiftable tocontrol fuel supplies to the charge-producing instrumentalities of thecarbureter, while member 7 constitutes an element operative in thecontrol of the amount of fuel delivered; these elements pertain moreparticularly to the carbureter structure per 86. The remaining structureconstitutes an instrumentality operative in the control of these twoelements the instrumentality being so arranged as to provide for thecontrol of either element at will from a single point, thus centeringthe control of the carbureting action at such point.

Obviously, changes in the details of construction may be made withoutdeparting from the spirit of my invention and I do not care to limitmyself to any particular form or arrangement of parts.

What I claim is 1. In combination, a dual-fuel carbureter having twofuel supply valves and a needle valve for regulating the fuel intake,and a longitudinally reciprocable and rotatable control member adaptedto operate the several valves selectively.

2. In combination, a dual-fuel carburetor having a pair of fuel valvesand a valve for regulating the fuel supply, and a longitudinallyreciprocable control member adapted to throw either fuel valve open androtatable to adjust the regulating valve.

3. In combination, a dual-fuel carburetor, a lever pivoted thereon toopen either fuel valve, a valve for regulating the fuel supply, and asingle control member longitudinally reciprocable to shift the lever androtatable to adjust the regulating valve.

l. In combination, a dual-fuel carbureter, a lever thereon adapted toopen either fuel valve, a needle valve with a controlling rod, a linkconnecting the lever to the controlling rod to shift the lever when therod is moved axially, and connections between the controlling rod andneedle valve to operate the latter when the rod is turned.

5. The combination of a dual-fuel carbureter having a fuel selectorlever pivoted thereon, and a needle valve for regulating the fuelsupply, a bracket, a rod longitudinally reciprocable and rotatable inthe bracket, a link secured to the lever and to the rod to operate theformer and a needle valve controlling sleeve operatively connected tothe rod to permit longitudinal telescoping engagement of rod and sleeve,said connections including a universal joint.

6. In combination, a dual-fuel carbureter, an internally screwthreadedmember thereon, a lever thereon for opening either fuel valve, a needlevalve having an operating connection, a bearing bracket, a rodlongitudinally reciprocable and rotatable there in, a link operativelyconnecting the lever and rod to throw the lever when the rod is shiftedlongitudinally, a sleeve nonrotatable and longitudinally reciprocable onthe rod, a screwthreaded member to operate the needle valve connectionswhen the member is moved axially, and a universal joint connectionbetween the member and the coupling sleeve.

'7. As a means for controlling the operations of a carbureter of thedual-supply type, means for controlling the individual delivery of therespective fuel supplies to the charge-producing instrumentalities, andincluding an element; shiftable to render either supply active, meansfor controlling the amount of fuel delivered, and including a shiftableelement, and an instrumentality operative to control the shiftingmovements of said shiftable elements, said instrumentality including amember shiftable longitudinally and rotatably, and independentconnections between said instrumentality member and said shiftableelements to permit shifting movements of either at will.

8. As a means for controlling the operations of a carbureter of thedual-supply type, means for controlling the individual delivery of therespective fuel supplies to the charge-producing instrumentalities, andincluding an element shiftable to render either supply active, means forcontrolling the amount of fuel delivered and including a shiftableelement, and an instrumentality operative to control the shiftingmovements of said shiftable elements, said instrumentality including amember shiftable longitudinally and rotatably, and independentconnections between said instrumentality member and said shiftableelements to per unit shifting movements of either at will, saidconnections being relatively arranged to provide shifting movement ofone element by the rotational movement of the member and the shiftingmovement of the other element by the longitudinal movement of themember.

In testimonywhereof I afiix my signature in the presence of twowitnesses.

HARVEY 'S. MCCUTCHAN.

Witnesses C. R. STIOKNEY, ANNA M. DORR.

